concurrency

use crossbeam::channel::unbounded;
use std::thread;

fn main() {
    let (tx, rx) = unbounded();

// Creating a Promise
const myPromise = new Promise((resolve, reject) => {
  const success = true;

  setTimeout(() => {
    if (success) {

use std::sync::mpsc;
use std::thread;

fn main() {
    let (tx, rx) = mpsc::channel();

export type Settled<R> =
  | { status: 'fulfilled'; value: R }
  | { status: 'rejected'; reason: unknown };

export interface ConcurrencyOptions {
  limit: number;

package pools

import (
  "bytes"
  "sync"
)

import Foundation
import UIKit

class ImageProcessor {
    // Background processing with main thread updates
    func processImage(_ image: UIImage, completion: @escaping (UIImage?) -> Void) {

type AsyncTask = () => Promise<void>;

export interface GuardOptions {
  name: string;
  logger?: Pick<Console, "info" | "warn" | "error">;
}

require "timeout"

module HealthCheck
  class Probe
    Result = Struct.new(:name, :status, :latency_ms, :critical, :error, keyword_init: true) do
      def healthy?

class CreateProcessedEvents < ActiveRecord::Migration[7.1]
  def change
    create_table :processed_events do |t|
      t.string :event_key, null: false
      t.string :job_class, null: false
      t.jsonb :metadata, null: false, default: {}

class ShardedCounter
  SHARDS = 16
  SNAPSHOT_TTL = 10 # seconds

  def initialize(name, redis: REDIS)
    @name = name

class CreateInventoryReservations < ActiveRecord::Migration[7.1]
  def change
    create_table :inventory_items do |t|
      t.string  :sku, null: false
      t.integer :quantity_on_hand,  null: false, default: 0
      t.integer :quantity_reserved, null: false, default: 0

use std::sync::{Arc, Mutex};
use std::thread;

fn main() {
    let data = Arc::new(Mutex::new(vec![1, 2, 3]));